Concavo-convex siphoning pump

ABSTRACT

A SIPHONING PUMP HAVING A SEMISPHERICAL RIGID PLASTIC CUP WITH A CIRCULAR EXTERIOR FLANGE AT ITS OPEN END. A NIPPLE ON THE CUP EXTENDS EXTERIORLY AND A FLEXIBLE HOSE HAS ONE END ATTACHED THERETO. A CONCAVO-CONVEX RUBBER DIAPHRAGM HAS A MARGINAL EDGE PORTION ATTACHED TO THE FLANGE AND THE CONCAVO-CONVEX BODY PORTION EXTENDS INTO THE CUP WITH ITS CONVEX BOTTOM SIDE DEPENDING INTO THE UPPER PORTION OF THE CUP AND THE CONCAVE SIDE FACING OUTWARDLY. THE CENTRAL PORTION OF THE CONCAVE SIDE HAS A VERTICALLY ELONGATED NIPPLELIKE FINGERGRIPPING PULL TO BE BODILY LIFTED UP WITH THE FINGERS TO INVERT THE DIAPHRAGM, AND THEN RELEASED TO PERMIT THE DIAPHRAGM TO BE RETURNED TO ITS NORMAL STARTING POSITION WITHIN THE CONFINES OF THE CUP. THE HOSE HAS A LENGTH TO PERMIT A CONTAINER TO BE PLACED ON THE GROUND AT A LEVEL BELOW THE LEVEL OF A TANK FROM WHICH LIQUID IS TO BE SIPHONED. A SOCKET AND GROOVE ARE FORMED IN THE DIAPHRAGM AT THE MARGINAL EDGE PORTION.

limited Mates Patent [72] Inventor .lunn Alberto Morale;

160 Ave. Adolphe Buyl, Brussels 5, Helgium [211 Appl. No. 079,027 [22] Filed Nov. 25, 1969 [45] Patented June 20, 19711 [54] CUhlC/tl/O-CONVIEX SIHPHONHNG PlUlMllP 3 Claims, 5 Drnwing ll 'igs.

[52] 111.8. M. l17/4l79, 222/416, 222/204, 137/150, 417/437 [5 i 1 lint. lCll ..1F0llb 413/00, F161 43/00 [50] li ielloil all Search 417/479, 472, 437 (X);222/416 (X), 204 (X), 209; 137/150(X). 147

[56] References Cited UNITED STATES PATENTS 840,986 1/1907 Aclrley 137/150X 1,799,023 3/1931 Peters 137/147 FOREIGN PATENTS 443,540 3/1936 Great Britain 137/150 466,120 7/1927 Germany 485,713 10/1953 ltaly ABSTRACT: A siphoning pump having a semispherical rigid plastic cup with a circular exterior flange at its open end. A nipple on the cup extends exteriorly and a flexible hose has one end attached thereto. A concave-convex rubber diaphragm has a marginal edge portion attached to the flange and the concave-convex body portion extends into the cup with its convex bottom side depending into the upper portion of the cup and the concave side facing outwardly. The central portion of the concave side has a vertically elongated nipplelike fingergripping pull to be bodily lifted up with the fingers to invert the diaphragm, and then released to permit the diaphragm to be returned to its normal starting position within the confines of the cup. The hose has a length to permit a container to be placed on the ground at a level below the level ofa tank from which liquid is to be siphoned. A socket and groove are formed in the diaphragm at the marginal edge portion.

PATENTED JUH28 I97] FIG-4 I NVENTOR JUAN ALBERTO MORALES ATTOR NE YS CONCAVO-CONVIEX SIPIIONIINIG PUMP This invention relatesto a siphoning pump.

An object of the invention is to improve the siphoning pump shown in my US. Pat. No. 3,l09,563 granted Nov. 5, 1963.

A further object of the invention is to provide an elastic diaphragm for such pump which is constructed so as to be protected by a plastic rigid cup and which also has a construction which will aid in the inversion ofthe diaphragm.

With the above and other objects in view will become apparent from the detailed description below, a preferred embodiment of the invention is shown in the drawings in which:

FIG. I is an elevation showing the elements prior to producing suction.

FIG. 2 is a similar view illustrating the position of the elements when suction is applied.

FIG. 3 is a cross-sectional view of the rigid plastic cup forming one of the elements of the pump FIG. 4 is a cross-sectional view of the elastic diaphragm which cooperates with the elements shown in FIG. 3, and

FIG. is a cross-sectional view of the elements of FIG. 3 and FIG. 4 assembled and shows in dotted lines the position taken by the elastic diaphragm when suction is applied.

Referring to FIG. I and 2 wherein the invention is shown generically, a long hose is indicated at l which has one end designed to be inserted into a vessel from which it is desired to siphon the liquid. The other end of the hose 1 is designed to be connected to a nipple provided upon the rigid plastic cup 2. The cup 2 is hollow and of semispherical shape. Cooperating with the cup 2 is an elastic diagram 3 having at its center a short flexible hose 4 preferably of rubber.

When the hose 4 is clamped as shown in FIG. 2 and pulled outwardly the diaphragm 3 is inverted thereby producing a vacuum in the cup 2 which is transmitted through the hose 1 for creating a suction of the liquid in a tank. If the level of the pump is below the level ofthe liquid in the tank then such suction will create a siphoning action to a container. A reverse action from the container to the tank can also be accomplished.

In FIGS. 3,4 and 5 a specific form of the elements indicated generally in FIGS. l and 2 is shown. In FIG. 3 the cross section of the rigid plastic cup corresponding to 2 is shown at 5. The nipple on such cup is indicated at 6 to which the hose 1 is con nected. On the cup 5 there is provided a circular flange 7 to which the elastic diaphragm shown in FIG. 4 is to be attached as indicated in FIG. 5.

The elastic diaphragm preferably of rubber comprises the concavo-convex portion to which is attached the flexible hose 1] which corresponds to the hose 4 shown in FIG. 2. The flexible rubber diaphragm 8 is provided with a circular border 9 which is turned so as to provide a socket for the flange 7. In addition the border 9 is provided with a circular groove III to facilitate the inversion of the diaphragm as shown in dotted lines in FIG. 5.

FIG. 5 shows the rigid plastic cup and the elastic semispherical diaphragm as in normal position in full lines. When the short hose lll corresponding to hose 4 is clamped as shown in FIG. 2 and pulled outwardly to the desired dottezl line position as shown in FIG. 5, a vacuum is created which is transmitted through the nipple 6 to the hose I for securing the requisite suction action and also when the pump is located below the level of the liquid to which the suction is applied a siphoning action is created.

I claim:

I. A siphoning pump preferably for use with a portable container for a reverse supply ofliquid comprising a semispherical rigid plastic cup having a circular exterior flange at its open end, a nipple on said cup extending exteriorly thereof, a flexible hose having one end attached to said nipple, a concavoconvex rubber diaphragm having a marginal edge portion attached to said flange, the concave-convex body portion of said diaphragm extending into said cup with its convex bottom side facing outwardly, the central portion of said concave side having a vertically elongated nipplelike fingergripping pull having a bore which can be caught hold of by the user's fingers, then squeezed in a manner to closesaid bore and bodily lifted up with the fingers to invert said diaphragm, and then released to permit the diaphragm to be returned to its normal starting position within the confines of said cup, said hose being of a length to permit a container to be placed on the ground at a level below the level ofliquid in a tank from which liquid is to be siphoned.

2. A pump as set forth in claim ll, wherein said marginal edge portion extends outwardly from said diaphragm and then inwardly to form a socket for said flange.

3. A pump as setjorth in claim 2, wherein a circular groove is provided in said diaphragm adjacent said socket to facilitate inversion of said diaphragm. 

